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<table width="100%" summary="page for YouthRisk2009"><tr><td>YouthRisk2009</td><td style="text-align: right;">R Documentation</td></tr></table>

<h2>YouthRisk2009</h2>

<h3>Description</h3>

<p>Survey of students in grades 9-12 concerning health-risk behiviors
</p>


<h3>Format</h3>

<p>A dataset with 500 observations on the following 6 variables.
</p>

<table summary="Rd table">
<tr>
 <td style="text-align: right;">
    <code>Sleep</code></td><td style="text-align: left;"> Average hours sleep on school night, coded with <code>10 or more hours</code>, <code>9 hours</code>, </td>
</tr>
<tr>
 <td style="text-align: right;">
 ]tab <code>8 hours</code>, <code>7 hours</code>, <code>6 hours</code>, <code>5 hours</code>, or <code>4 or less hours</code></td>
</tr>
<tr>
 <td style="text-align: right;">
    <code>Sleep7</code></td><td style="text-align: left;"> Seven or more hours of sleep? 0=<code>No</code>, 1=<code>Yes</code></td>
</tr>
<tr>
 <td style="text-align: right;">
    <code>SmokeLife</code></td><td style="text-align: left;"> Ever smoked? <code>No</code> or <code>Yes</code></td>
</tr>
<tr>
 <td style="text-align: right;">
    <code>SmokeDaily</code></td><td style="text-align: left;"> Regular smoker? <code>No</code> or <code>Yes</code> </td>
</tr>
<tr>
 <td style="text-align: right;">
    <code>MarijuaEver</code></td><td style="text-align: left;"> Ever smoked marijuana? 0=<code>No</code> or 1=<code>Yes</code></td>
</tr>
<tr>
 <td style="text-align: right;">
    <code>Age</code></td><td style="text-align: left;"> Age (in years) </td>
</tr>
<tr>
 <td style="text-align: right;">
   </td>
</tr>

</table>



<h3>Details</h3>

<p>Data from the Centers for Disease Control's Youth Risk Behavior Surveillance System (YRBSS). 
</p>


<h3>Source</h3>

<p>http://www.cdc.gov/HealthyYouth/yrbs/index.htm
</p>


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